Can End Produced From Downgauged Blank
AssigneeRexam Beverage Can Company
InventorsMichael R. Gogola, Randall G. Forrest
Life of this patent
Estimating the term…
Abstract
A can end for a two-piece beverage container has a curl positioned about a longitudinal axis which defines an outer perimeter of the can end. A circumferential wall angles downwardly and radially inwardly relative to a radially inner portion of the curl. A strengthening member extends radially inwardly relative to the circumferential wall. A center panel extends radially outwardly from the longitudinal axis towards the strengthening member and has a diameter greater than 87.7% of an overall diameter of the can end. A frangible score and a hinge portion define an openable tear panel in the center panel. A stay-on tab is attached to the center panel and has a nose portion overlying the tear panel opposite a lift end of the tab.
Claims28
-27. (canceled)
A can end for a two-piece beverage container, the can end comprising:
- a curl positioned about a longitudinal axis and defining an outer perimeter of the can end having a diameter at least about 50 mm and less than about 70 mm;
- a circumferential wall angled downwardly and radially inwardly relative to a radially inner portion of the curl wherein an angle of the circumferential wall is greater than about 10°;
- a countersink extending downwardly and radially inwardly relative to the circumferential wall;
- a center panel extending radially outwardly from the longitudinal axis towards the countersink having a diameter greater than 87.7% of the overall diameter of the can end;
- a panel radius joining the center panel with the countersink;
- a frangible score and a hinge portion defining an openable tear panel in the center panel;
- and
- a stay-on tab attached to the center panel having a nose portion overlying the tear panel opposite a lift end of the tab.
A can end for a two-piece beverage container, the can end comprising:
- a curl positioned about a longitudinal axis and defining an outer perimeter of the can end;
- a circumferential wall angled downwardly and radially inwardly relative to a radially inner portion of the curl;
- a strengthening member extending radially inwardly relative to the circumferential wall;
- a center panel extending radially outwardly from the longitudinal axis towards the strengthening member having a diameter greater than 87.7% of the overall diameter of the can end;
- a frangible score and a hinge portion defining an openable tear panel in the center panel;
- and
- a stay-on tab attached to the center panel having a nose portion overlying the tear panel opposite a lift end of the tab.
A method of forming a can end for a two-piece beverage container, the can end having a central panel wall with a product side and a public side, the public side having a means for opening a frangible panel segment, the method comprising the steps of:
- providing an end member shell comprising a central panel extending radially outwardly from a longitudinal axis, a panel radius along a peripheral edge of the central panel, a strengthening member integral with the panel radius, a circumferential wall extending upwardly from the strengthening member, and a curl defining the outer perimeter of the end member shell and integral with the circumferential wall;
- and
- reforming the end member shell to increase a diameter of the central panel.
A can end for a two-piece beverage container, the can end comprising:
- a curl positioned about a longitudinal axis and defining an outer perimeter of the can end;
- a circumferential wall angled downwardly and radially inwardly relative to a radially inner portion of the curl;
- a countersink extending downwardly and radially inwardly relative to the circumferential wall having an outer wall joined to an inner wall by an annular curved segment;
- a center panel extending radially outwardly from the longitudinal axis towards the countersink;
- a panel radius joining the center panel with the countersink;
- a frangible score and a hinge portion defining an openable tear panel in the center panel;
- a stay-on tab attached to the center panel having a nose portion overlying the tear panel opposite a lift end of the tab;
- and
- wherein the inner wall of the countersink and the panel radius comprise a zone of reformed cold worked metal having increased strength.
Dependencies are inferred from the claim text.